Front-furrow-wheel adjustment for plows



June 12, 1928.

W. S. GRAHAM FRONT FURROW WHEEL ADJUSTMENT FOR PLOWS Filed Feb. 2'7, 1926 Patented June 12, 1928.

UNITED STATES PATENT OFFICE. v

WILLIAM S. GRAHAM, F CANTON, ILLINOIS, ASSIGNOR TO INTERNATIONAL HAR- VESTER COMPANY, A. CORPORATION OF NEW JERSEY.

FRONT IEURROW-WHEEL ADJUSTMENT FOR PLOWS.

Application filed February 27, 1926. Serial No. 91,008.

This invention relates to wheel plows, and more particularly to plows of that character which are dirigible for the purpose of efiecting proper operation of the plow under various conditions met in actual use.

More specifically, the invention is concerned with devices for controlling the angular relationship of one or more supporting wheels with the direction of movement of the plow.

It is an object of the invention to provide improved means for controlling the positions of the supporting wheels of the plow so that the draft on the plow frame will tend to hold the plow from lateral movement under appropriate conditions of adjustment.

The invention is exemplified in the accompanying drawings, in which Fig. 1 is a plan view showing a conventional type of plow modified by the incorporation of a structure deslgned in accordance with the teachings of this invention;

Fig. 2 is an end elevation of the devices assembled upon the spindle for the front furrow wheel Fig. 3 is a detail view showing the adjustable connection between the tongue bracket and the front furrow wheel crank arm;

I Fig. 4 is a detail view showing another feature of the structure illustrated in Fig. 3; and

Fig. 5 is a plan view of the tongue bracket.

In the drawing a plow frame 1 is disclosed having plow bottoms 2 and 3 attached thereto in a well known manner. The plow is supported upon a land wheel 4:, a front furrow wheel 5 and a rear furrow wheel 6. My invention is concerned with the devices connecting the latter two wheels.

The front furrow wheel 5 is rotatively mounted upon the lower bent end of a vertical spindle 7 which is rotatable in the bearing 8, rigidly secured to the plow frame. This spindle is also slidably mounted within the bearing 8, and for the purpose of adjusting the plow frame Vertically with respect to the spindle 7, an adjusting lever 9 is pivoted to a detent bracket 10 which is rotatively mounted by means of the ears 11 upon the spindle 7. The detent bracket 10 is prevented from downward movement on the spindle 7 by means of the collar 12 secured in position upon the spindle by set screw 13. The arm 14 connects the lower end of the adjusting lever 9 with the plow frame, as shown in Fig. 2.

Rotatively mounted upon the spindle 7 between the cars 11 of the detent bracket 10 is a vertical sleeve 15, shown formed as an integral part of the tongue bracket 16. A tongue or equivalent draft device 17 is secured to the front of the tongue bracket 16 so that the latter must turn therewith. For the purpose of desired flexibility of the structure, the tongue may pivot upwardly or downwardly relative to the tongue bracket 16.

The tongue bracket is provided with a vertical integral sleeve 18, which is bored to receive the cylindrical portion of a vertically extending swivel 19, the upper end of which is formed as an eye. The eye portion of this swivel member contacts with the top of the sleeve 18 so as to prevent the downward movement of the swivel therein, and upward movement of the swivel is prevented by means of a cotter pin 20 extending through the lower end of the swivel. I

The front furrow wheel crank arm 21 is fixedly mounted upon the upper end of the spindle 7 so as to prevent substantial vertical play of the detent bracket 10. This crank arm extends radially from the spindle 7 and has its outer end adjustably secured to the swivel 19, by means of an eye bolt 22.. This eye bolt has screw threaded engagement with, a cylindrical block 28 which is confined within the outer end of the crank arm 21. i

As shown in Fig. 3, the crank arm 21 is laterally slotted at its ends as shown at 24 and 25, for the purpose of allowing pivotal movement between the arm 21 and the eye bolt 22. This same figure discloses a collar 26 pinned to the eye bolt so as to rotatively mount the eye bolt in the swivel 19 and prevent displacement of the eye bolt therefrom.

The rear furrow wheel 6 is a caster wheel mounted upon the plow frame in a well known manner. The spindle of the rear furrow wheel has a crank arm 27 rigidly mounted thereonat its upper end. Pivotally mounted on the outer end of the crank arm 27 is a swivel or eye bolt 28 through the eye of which is passed a control rod 29. The forward end of the control rod is formed as an eye passing through the eye of the eye bolt 22 so as to form therewith a jointed control rod. A hand wheel 30 is fixedly mounted upon the control rod 29 so as to enable the operator to easily rotate the rod.

The furrow wheel adjusting deviceillus' trated is particularly useful in plowing upo n hill sides where the plow is normally caused to slide laterally so as to interfere with its proper functioning. By rotating the con-' trol rod 29, the angle of the front furrow wheel 5.1nay be so altered as to counteract the above mentioned tendency.

In. order that the operation of the illustrative device may be clearly understood, the tongue 17 will be considered as held against lateral pivotal action. Vhen the control rod 29 is turned, the eye bolt 22 rotates within the block 23 and causes movement of the crankarmQl to or away from the swivel 19 depending upon the direction in, which the control rod is turned. This act-ionre su'lts from the fact that the eye bolt is held froni lengthwise movement relative to the swivel 19 by its eye and the collar or sleeve26.- V

When the crank arm 21 is moved, as above 5 described, it is evident that the front furrow wheel 5 will be angled with respect to the plow. The rear furrow wheel does not have its angle changed, as the above action takes place because of the fact that the controiro'd does not move lengthwise.

Having described my invention, I claim:

1; In a low, a plow frame having front and rear furrow wheels, axles for said furrow wheels, each axle having an upright spindle, rotatable in hearings on the plow frame, a first and second crank arm mounted on the front furrow wheel spindle,the first crank arm being fixed on that spindle and the second crank arm rotatable thereon, a draft device connected to the second crank arm,.a third crank arm mounted on the spindle of the rear furrow wheel so as to control its rotary movements, and steering means comprising a furrow wheel adjusting device connecting all of said crank arms, said ad jiisti'ng device including a jointed control rod passing through one of said crank arms onthe front furrow wheel spindle. v

2. In a'plow, a'plow frame having front and rear furrow wheels, axles for the furrow wheels, the axles having vertical spindles rotatable in bearings on the plow frame, a laterally projecting arm rotat'ably supportedon the spindle of the front furrow wheel, 'a draft device connected to' said arm, a second laterally projecting armiion-rotativ'ely mounted on the spindle of the front furrow wheel and having its outer end held permanently circumferentially spaced from theouterend of the first mentioned arm, a

third laterally projecting arm rigidly mounted onthe spindle of the rear furrow wheel, a steering device connecting all of said laterally projecting arms to swing said front and rear furrow wheels when the draft device is swung, said steering device comprising two rods located 1n end to end relation,

-and a universal connectionbetween the adjacent ends of the rods;

In a plow, a plow frame having front and rear furrow Wheels, axles for the furrow wheels, each axle having a vertical spinthe rotatable in bearings on the plow frame, a first and'a second crank arm mounted on thespindle for the front furrow wheel, the first crank ar'm being fixed-on that spindle and the second arm rotatable thereon, a draft device connected to the second crank arm, a third crank arm fixed to the spindle of the rear furrow wheel, and a steering meanscomprising a front furrow wheel adjusting device connecting all of said crank arm's, 's'aid adjusti'rrg'device consisting of a jointed shaft, a vertical stem rotatively mounted in and vertically extending from the second crank arm, and means for rotatably mounting the jointed shaft in the upper end of said stem. 1 j

4. In a wheel plow having front and rear furrow wheels, vertical spi'ndlesrotatable in hearings on the plow for mounting said furrow wheels, a land wheel, plow bodies, a first crank arm laterally projecting from and rigidly mounted on the spindle for the front furrow wheel, a tongue bracket laterally projecting from and rotatively mounted on the spindle for the front furrow wheel, a swivel member extending from the tongue bracket and rotatable with respect thereto :ona vertical axis, a laterally projecting second crank gidly mounted upon the spindle for the rear furrow wheel, and steer- Kilt:

mg means comprising a jointed control rod I extending from 'the first crank arm through the tongue bracket swivel to the second crank arm and rotatable for the purpose of angling the front furro-wwheel, v j

5. In a wheeled plow having front and rear furrow wheels, upright rotatable spindles having axles for said furrow wheels at their lower ends, a first support fixed to the spindle for the front furrow wheel, a second support movable relative to the spindle for the front furrow wheel, a draft device connected to said'second support so that the second support must turn with the draft device a third support mounted on the spindle for the rear furrow wheel and so connected thereto as to control the angular movements of the rear furrow wheel, and steering means comprising end to 'end joined rods connecting all of said supports and passing directly through one of the front supports. 6. In aplow, a plow frame having front andre'ar furrow wheels, axles for said furrow whe'els, each axle carried by an upright spindle rotatable in bearings 'on the plow frame, first and second supports mounted on the front furrow wheel spindle, the first support being fixed relative to that spindle and the second support rotatable relative thereto, a draft device connected to the sec ond support, a third support mounted on the spindle of the rear furrow wheel so as to control its turning movements and steering means comprising a furrow wheel adjusting device connecting all of said supports, said adjusting device including a jointed control rod passing through the sup port which is fixed relative to the front furrow wheel spindle.

7 In a plow, a plow frame having front and rear furrow wheels, axles for the furrow wheels, the axles being carried by vertical spindles rotatable in bearings on the plow frame, a laterally projecting support adjustably mounted on the spindle of the front furrow wheel, a draft device connected to said support, a second laterally projecting support non-rotatively mounted on the spindle of the front furrow wheel and hav- I ing its outer end held permanently circumferentially spaced from the outer end of the first mentioned support, a third laterally projecting support rigidly 'mounted on the spindle of the rear furrow wheel, a steering device connecting all of said laterally projecting supports to swing said front and rear furrow wheels when the draft device is swung, said steering device comprising two rods located in end to end relation, and a double-eye connection between the adjacent ends of the rods.

8. In a plow, a plow frame having front and rear furrow wheels, axles forthe furrow wheels, vertical spindles rotatable in bearings on the plow frame and carrying the axles, a first and a second crank arm mounted on the spindle for the front furrow wheel,

the first crank arm being fixed on that spindle and the second arm'rotatable thereon, a draft device connected to the second crank arm, a third crank arm fixed to the spindle of the rear furrow wheel, and steering means comprising a front furrow wheel adjusting deviceconnecting all of said crank arms, said adjusting device consisting of a jointed rod, a vertical stem rotatively mounted in and vertically extending from the second crank arm, means for rotatively mounting the jointed shaft in the upper end of said stem, and a screw threaded block pivotally mounted in the first crank arm for adjustably receiving said rod.

9. Ina wheel plow having front and rear furrow wheels, vertical spindles rotatable in bearings on the plow for mounting said furrow wheels, a land wheel, plow bodies, a first crank arm laterally projecting from and rigidly mounted on the spindle for the front furrow wheel, a tongue bracket laterally projecting from and rotatively mounted on the spindle for the front furrow wheel, a swivel member extending from the tongue bracket and rotatable with respect thereto on a vertical axis, a laterally projecting second crank arm rigidly mounted upon the spindle for the rear furrow wheel, steering means comprising a jointed control rod extending from the first crank arm through the tongue bracket swivel to the second crank arm and rotatable for the purpose of angling the front furrow wheel, and a pivot block journaled in the second crank arm and screw-threadedly receiving the control rod.

In testimony whereof I affix my signa- WILLIAM GRAHAM.

'ture. 

